Duff-Norton TAC Series Owner's manual

Brand: Duff-Norton

Model: TAC Series

Type: Owner's manual

TAC Models

with Clutch

TAL Models

with Limit Switches

TAC Models

with Limit Switches

and Potentiometer

CAUTION

This manual contains important information for the correct installation, operation and maintenance of the

equipment described herein. All persons involved in such installation, operation, and maintenance should

be thoroughly familiar with the contents. To safeguard against the possibility of personal injury or property

damage, follow the recommendations and instructions of this manual and keep it for further reference.

WARNING

The equipment shown in this manual is intended for industrial use only and should not be used to lift,

support, or otherwise transport people.

Electromechanical Linear Actuators

with parts list

Installation, Operating

& Maintenance Instruc-

tions

Publication Part No. EM-1050-200

Electromechanical Actuators with Acme Screw

Contents

Section I General Information

1-1. General Information ...................................................................................................................3

1-2. Application Information .............................................................................................................3

1-3. Inspection ...................................................................................................................................3

Figure 3-1. Dimensions in Inches .................................................................................................................3

1-4. Warranty and Warranty Repair ...................................................................................................3

Table 1-1. TA500 Performance at Rated Load ............................................................................................4

Table 1-2. TA1000 Performance at Rated Load ..........................................................................................4

Section II Installation

2-1. Clevis Connections ....................................................................................................................4

2-2. Motor Capacitor .........................................................................................................................4

2-3. Wiring Connections ...................................................................................................................4

Figure 2-1. Wiring Schematic .......................................................................................................................4

Figure 2-2. Terminal Block Connections (AC) ............................................................................................5

Figure 2-3. Wiring Schematic DC with Clutch ............................................................................................5

2-4. Limit Switch Adjustment ...........................................................................................................5

2-5. Potentiometer Adjustment ..........................................................................................................5

Section III Operation Precautions

3-1. Motor..........................................................................................................................................6

3-2. Clevis Pins .................................................................................................................................6

3-3. Jamming .....................................................................................................................................6

Section IV Maintenance

4-1. Lubrication .................................................................................................................................7

4-2. Disassembly ...............................................................................................................................7

4-3. Load Bearing ..............................................................................................................................7

4-4. Reassembly ................................................................................................................................7

Section V Parts Lists and Technical Illustrations

Table 5-1. Linear Actuator Parts List ........................................................................................................8

Figure 5-1. Linear Actuator Exploded Illustration .......................................................................................9

Table 5-2. Limit Switch Parts List ............................................................................................................10

Figure 5-2. Limit Switch Exploded Illustration .......................................................................................... 11

1-1. General Information

This manual provides information for the installation,

operation and repair of Duff-Norton electromechanical

actuators.

1-2. Application Information

The actuators described in this manual are intended for

industrial use only and should not be used to lift, sup-

port or otherwise transport people or loads over people,

unless you have obtained written authorization from

Duff-Norton that the actuator is suitable for the particular

application.

The actuator is designed for lifting or pushing loads no

more than its load rating, on an intermittent basis, not for

applications requiring continuous operation. The actua-

tor is designed for clevis mounting and cannot support

side loading of the translating tube.

1-3. Inspection

Every actuator is tested at the factory under full rated

load to ensure that the actuator operates properly and

that limit switches precisely stop its travel. Limit switch

settings must be rechecked at installation, since rotation

of the translating tube will change set points.

Inspect the actuator before installation for any evidence

of shipping damage or loose parts.

Section I

General Information

1-4. Warranty and Warranty Repair

Subject to the conditions stated herein,

Duff-Norton will repair or replace, without charge, any

parts proven to Duff-Norton’s satisfaction to have been

defective in material or workmanship. Claims must be

made within one year after date of shipment. Duff-Norton

will not repair or replace any parts that become inopera-

tive because of improper maintenance, eccentric load-

ing, overloading, chemical or abrasive action, excessive

heat, or other abuse.

Equipment and accessories not of Duff-Norton’s manu-

facture are warranted only to the extent they are warrant-

ed by the manufacturer, and only if the claimed defect

arose during normal use, applications, and service.

Equipment which has been altered or modiﬁed by any-

one without Duff-Norton’s authorization is not warranted

by Duff-Norton. Except as stated herein, Duff-Norton

makes no other warranties, express or implied, including

warranties of merchantability and ﬁtness for a particular

purpose.

Authorization for return must be received from

Duff-Norton before returning any equipment for inspec-

tion or warranty repair.

Table 3-1. Dimensions in Inches

terminal block under the motor cover. Refer to Fig. 2-1

for wiring schematic and Fig. 2-2 for Terminal Block Con-

nections.

Connections to DC units are made directly to motor

leads. Use wire adequate for the rated motor amps.

Figure 2-1. Wiring Schematic

Connect AC neutral to ‘Common’ and switched motor

power to ‘Extend’ and ‘Retract’. Capacitor may be con-

nected without regard to polarity.

Connecting cable may be run through the grommet sup-

plied, or a 1/2" size conduit ﬁtting may be connected to

the cover. If using ﬁtting, check for clearance between

ﬁtting and installed cover.

Table 1-1. TA500 Performance at Rated Load

Table 1-2. TA1000 Performance at Rated Load

Section II

Installation

2-1. Clevis Connections

Refer to Fig. 1-1 for appropriate mounting dimensions.

The actuator should be connected with .50 inch diameter

steel clevis pins, or bolts with enough unthreaded length

to provide full clevis support. Lightly grease clevis pins to

prevent wear and noise.

2-2. Motor Capacitor

All AC units use permanent split capacitor motors requir-

ing an external motor run capacitor. Capacitor ratings are

listed below.

Voltage Rating Duff-Norton No.

115VAC 50uf,370VAC SK6405-7-15

230VAC 15uf,440VAC SK6405-7-14

If actuators are never operated at more than 50% of

rated load, capacitance may be reduced by up to 33%,

resulting in lower current and motor operating tempera-

ture.

2-3. Wiring Connections

All wiring connections for AC units can be made to the

Available Models Clutch

Limit

Switch

Potentiometer Voltage Speed Amps Duty

TAL05-1A10-# X 115Vac, 60Hz 52 in/min 4.0 amps 17.5%

TAP05-1A10-# X X

TAL05-2A10-# X 230Vac, 60 Hz

[220Vac, 50 Hz]

54 in/min

[45 in/min]

2.0 amps

[2.5 amps]

17%

[14%]

TAP05-2A10-# X X

TAC05-1D20-# X 12 Vdc 27 in/min 10 amps 40%

TAC05-2D20-# X 24 Vdc 27 in/min 5 amps 40%

Available Models

Limit

Switch

Potentiometer Voltage Speed Amps Duty

TAL10-1A20-# X 115Vac, 60Hz 26 in/min 4.0 amps 17.5%

TAP10-1A20-# X

TAL10-2A20-# X 230Vac, 60 Hz

(220Vac, 50 Hz)

27 in/min

(22 in/min)

2.0 amps

(2.5 amps)

17%

(14%)

TAP10-2A20-# X X

# = Actuator stroke. Standard strokes are 4, 8 and 12 inches (101, 203 and 305 mm)

Custom stroke lengths are available.

Performance ﬁgures at rated load. Data is approximate.

Black

Cap

Red

White

Retract

Extend

Figure 2-3. Wiring Schematic DC with Clutch

DC models with clutch may be operated through re-

lays or by utilizing a momentary action, Double Pole,

Double Throw, Center-off toggle switch (Duff-Norton part

EM534). If actuator runs opposite the desired direction,

reverse the red and black motor wires.

2-4. Limit Switch Adjustment

1. With translating tube unrestrained, run the actuator

toward the retracted position until the switch cam

actuates the switch.

2. Rotate the translating tube by hand to the desired

retracted position.

3. With the translating tube restrained against rotation,

run the actuator to the desired extended position.

DANGER

To avoid electric shock hazard and possible electrocu-

tion, disconnect power before making any adjustments

inside motor cover.

4. Disconnect power. Remove motor cover. On

Potentiometer models only: remove two screws

holding the terminal block plate and pull plate and

Figure 2-2. Terminal Block Connections (AC)

potentiometer straight off, ﬁrmly holding limit switch

cams.

5. Raise the ﬂap of the electrical insulator sheet to

expose the limit switch cams. Holding the cam gear

to prevent loading of the small gears, loosen the two

screws holding the top cam. Rotate the cam toward

the switch until the switch just clicks. Again holding

the gear, tighten the screws.

6. Restore power and operate actuator to check limit

switch settings.

7. If settings are correct, disconnect power and rein-

stall motor cover.

NOTE

1. Exercise care to avoid jamming the actuator.

2. With no load, some actuator drift is typical. If pre-

cise setting is required, it must be done with the

expected operating load.

3. If problems are encountered setting the Retract

switch, check to see if motor is turning while the

translating tube is being twisted. If so, use a small

screwdriver to hold the end of the motor shaft while

twisting translating tube.

4. Rotating the translating tube will change the set-

tings of both switches by 1/6 inch per revolution of

the tube.

2-5. Potentiometer Adjustment

1. Actuator limit switches must be set prior to potenti-

ometer installation.

2. The potentiometer is 5000 ohm single turn. Resis-

tance changes approximately 235 ohms per inch for

a 20:1 ratio actuator, or 117 ohms per inch for a 10:1

ratio.

3. Retract the actuator until the limit switch cuts it off.

Disconnect power.

4. Loosen 1/2" nut on potentiometer bushing. Press

potentiometer shaft into upper limit switch cam and

mount terminal block plate with two screws and

standoffs.

5. Use an ohmmeter to measure resistance between

potentiometer terminals S and CW. Twist potenti-

ometer body to minimize resistance between these

terminals. Use a thin 1/2" end wrench to tighten pot

nut. Recheck for continuity between S and CW.

6. Terminal S is the potentiometer slider, with actuator

extension increasing the resistance between S and

CW.

Motor

Section III

Operation Precautions

3-1. Motor

The motor used on this actuator has a very high power

output for its size. Consequently, heat generation in the

motor is more rapid than in more conventional motors.

Duty cycle limitations must be recognized at all times,

whether or not the actuator is loaded.

Motors are equipped with thermal protectors to guard

against winding burnout. Once tripped , it may take 10

– 15 minutes for the motor to cool sufﬁciently to reset

the thermal protector. Repeated thermal trips can be an

indicator of excessive load or duty, low voltage, or weak

capacitor(AC only).

WARNING

When operated near duty limits, external motor tem-

perature may be hot enough to cause burns. Actuator

should be installed with appropriate precautions to

prevent injury to personnel.

3-2. Clevis Pins

The clevis pins must be maintained parallel to each

other during the full stroke of the actuator. Side loading

or torquing as a result of non-parallel clevises can cause

serious actuator damage. Any creaking noise at the clev-

ises is an indication that pins need lubrication to prevent

pin wear.

3-3. Jamming

CAUTION

Actuators with limit switches have no inherent me-

chanical overload protection. Repeated jamming of

the actuator, internally or against an external stop, will

result in very rapid wear and eventual failure. Be sure

that limit switches are functioning properly to stop the

actuator within its stroke limits.

No-load operation will produce additional drift. Limit

switches should be set far enough from ends of stroke

to accommodate this if no-load operation is antici-

pated.

Actuators with clutches have a degree of protection

against internal or external jamming or overloading;

however, extended slipping of the clutch will cause

accelerated wear and premature actuator failure. To

provide acceptable long-term operation at rated load,

clutches are set somewhat above rated load. Do not

depend on the clutch to gage an acceptable load.

Clutches are not adjustable for wear.

Section IV

Maintenance

4-1. Lubrication

The load bearing and the screw and translating tube

are adequately lubricated for the life of the unit. Gear-

ing receives a light brush coat of grease at the factory. If

the actuator is removed for repair or inspection, the gear

lubricant may be replenished by ﬁlling the gear tooth

spaces with a heavy, tacky gear grease. A few drops of

oil should be placed on the porous bronze bearings at

the same time.

4-2. Disassembly

Remove the one Phillips head screw from the gear

housing and the four hex head screws from the tube

ﬂange. Separate housing and housing plate. All mechani-

cal parts should now be accessible. The lifting nut is

threaded and staked to the translating tube. Disass-

sembly of the screw and translating tube assembly is

not possible nor anticipated to be necessary, due to the

expected long life of the screw and lifting nut.

4-3. Load Bearing

The bearing is permanently lubricated and not readily

relubricated. A bearing which shows any sign of rough-

ness should be replaced. Clamp screw in a vise with

soft jaws and remove retaining nut. Use thread locking

adhesive on nut when replacing bearing.

4-4. Reassembly

Assembly is the opposite of disassembly, with no spe-

cial techniques required. Tube ﬂange screws are self-

tapping style and should be started by hand to avoid

possible cross-threading.

Index

Number

Part Name

Qty.

Req.

Part Number

1 Gear housing 1 EM1050-2

2 Shaft, cluster gear 1 SK3410-43

3 Pinion 1 SK3410-7

4 Screw, 10-32 x 3/4 3 H2695PC

5 Housing plate 1 EM1050-1

6 O-ring, -142 1 X6477-137

7 Motor, 115 VAC 1 EM1050-24

7a Motor, 220-230 VAC 1 EM1050-25

7b Motor, 12 VDC 1 EM1050-26

7c Motor, 24 VDC 1 EM1050-27

8 Lifting nut 1 EM1050-33

9 O-ring 1 X6477-136

10 Spiral ring 1 S61-2C

11 Outer tube, 4" stroke 1 EM1050-6-4

Outer tube, 8" stroke 1 EM1050-6-8

Outer tube, 12" stroke 1 EM1050-6-12

12 Flange, tube 1 EM1050-3

13 Translating tube, 4" stroke 1 EM1050-5-4

Translating tube, 8" stroke 1 EM1050-5-8

Translating tube, 12" stroke 1 EM1050-5-12

14 Rod seal 1 EM1050-54

15 Clevis nut 1 SK3410-33

16 O-ring, -022 1 X6477-101

17 Top clevis 1 EM1050-7

18 Flanged bushing 1 SK3410-44

19 Cluster gear, 20:1 1 EM1050-36

Cluster gear, 10:1 1 SK3410-5

20 Output gear, limit switch models 1 EM1050-45

Clutch, 500 pound models 1 EM1050-58

21 Gasket, housing 1 SK3410-25

22 Nut, 1/2-20 1 S12-38C

23 Woodruff key, #304 1 S23-4C

24 Bearing, 6302Z 1 EM1050-302

25 Screw, 4" stroke 1 EM1050-4-4

Screw, 8" stroke 1 EM1050-4-8

Screw, 12" stroke 1 EM1050-4-12

26 Stop washer 1 EM1050-35

27 Screw, 3/8-24 x 3/4 1 H2413C

28 Screw, 12-24 x 2 4 H2696PC

Section V

Illustrated Parts List

Table 5-1. Linear Actuator Parts List

Figure 5-1. Linear Actuator Exploded Illustration

WARNING

Use only replacement parts

supplied by or approved by

Duff-Norton. Non-authorized

parts may be inadequate,

resulting in serious injury or

death in event of failure.

Index

Number

Part Name Qty. Req. Part Number

1 Gasket 1 EM1050-65

2 Limit switch base 1 EM1050-72

3 Grooved pin, 1/16" 2 S57-10C

4 Cluster gear 4 SK3275-20

5 Standoff 2 EM1050-59

6 Gasket, cover 1 EM1050-66

7 Cam, upper 1 SK3275-21

8 Plate, terminal block 1 EM1050-61

9 Screw, #6 x 1.5 2 H2706PC

10 Terminal block 1 EM1050-60

11 Screw, 8-32 x 1-1/4" 2 S62-4C

12 Cover 1 EM1050-68

13 Screw, 8-32 x 3/8 2 S62-2C

14 Cam gear 1 SK3275-19

15 Grooved pin, 7/64" 2 S57-12C

16 Switch 2 SK3275-31

17 Cam, lower 1 SK3275-22

18 Pin, 1/8" 1 S51-4C

19 Retainer, 7/64" 2 SK3275-28

20 Screw, #8 x 5/8 2 H2926C

21 Retainer, 1/8" 1 SK3275-37

22 Grommet 1 EM1050-67

Table 5-1. Limit Switch Parts List

Figure 5-2. Limit Switch Exploded Illustration

WARNING

Use only replacement parts

supplied by or approved by

Duff-Norton. Non-authorized

parts may be inadequate,

resulting in serious injury or

death in event of failure.

EM-1050-200

02/17

May not be copied in whole or in part.

Printed in the USA

P.O. Box 7010 • Charlotte, NC 28241-7010

Phone: (800) 477-5002 • (704) 588-4610

Fax: (704) 588-1994

Email: [email protected]

www.duffnorton.com

Duff-Norton also Manufactures

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Duff-Norton TAC Series Owner's manual

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Duff-Norton TAC Series Owner's manual

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